i'm surprised no ones mentioned the latency issue yet.
its pretty bad......
i use a uc 33 and the latency is just nowhere near fast enough to do what i normally would do on a dj mixer.
as there are only 2 major device connection types available ( usb and firewire ) i'd like to know which one each of these gizmos use and what the latency is.
it's all very well having a real cross fader etc etc but if it's half a second behind you all the time it's a waste of money.
no , not yet........still not yet........the technology STILL has not quite got me convinced.
there are some great ideas floating around BUT BUT BUT.... it's a very big "but"